Oven.



G. W. JONES.

OVEN.

APPLICATION FILED FEB. 3,1913.

1 12x259, Patented Feb. 2, 1915.

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THE NORRIS PETERS COW PHOTO-LITHO. WASHING/ ON. D C

G. W. JONES.

OVEN.

APPLICATION FILED FEB. 3,1913

Patented Feb. 2, 1915.

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THE NORRIS PETERS c0 FHOTO-LITHO., WASHING-ION. D c.

G. W. JONES.

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APPLIGATION FILED THE. 3, 1913.

Patented F9112, 1915.

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'HE NORRIS PETERS Co. PHOTO-LITHQ. WASHINGTON. D c

G. W. JONES.

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APPLICATION FILED FEB. 3,1913.

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THE NORRIS PETERS c0 PHOTO L/THO. wAwl/Nu rum 0 c KTFWED STATES FA FENT @FFEQE.

GEORGE WINTER JONES, OF WINNIPEG, MANITOBA, CANADA, ASSIGNOR TO MAGNAIB AND ROBERTS, LIMITED, OF WINNIPEG, CANADA.

OVEN.

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Specification of Letters Patent.

Patented Feb. 2, 19115.

Application filed February 3, 1913. Serial No. 745,906.

To all whom it may concern:

Be it known that I, Grouse WINTER Jones, of the city of \Vinnipeg, in the Province of Manitoba, Canada, have invented certain new and useful Improvements in Ovens, of which the following is the speclfication.

My invention relates to a hot air oven for baking bread, cakes, etc., and the object of the invention is to provide an inexpensive, durable and eflicient oven of large capacity heated by hot air, the parts being arranged and constructed as hereinafter more particularly described, and later pointed out in the appended claim.

Figure 1 is a side elevation of the oven. Fig. 2 is an end view of the same. Fig. 3 is a longitudinal vertical sectional view through the oven, the section being taken in the plane denoted by the line X-X Fig. 2. Fig. 4 is a longitudinal horizontal sectional view through the oven, the section being taken in the plane denoted by the line Y-Y Fig. 2. Fig. 5 is a horizontal sectional view through the oven, the section being taken in the plane denoted by the line ZZ Fig. 2. Fig. 6 is a horizontal sectional view through the oven, the section being taken in the plane denoted by the line TT Fig. 2. Fig. 7 is a horizontal sectional view through the oven, the section being taken in the plane denoted by the line LL Fig. 2. Fig. 8 is a vertical cross sectional view through the oven, the section being taken in the plane denoted by the line HH' Fig. 1.

In the drawing like characters of reference indicate corresponding parts in each figure.

1 represents afire brick wall supporting one side of the fire grate 2 which is carried at the opposite side by a fire brick bridge 3, providing between them and beneath the grate an ash pit 4:.

5 is a brick pier located at some distance from the bridge, the bridge and pier supporting a number of I beams 6, which carry metallic plates forming a floor 7.

8 is an inner casing substantially rectangular in cross section, formed from suitable sheet metal plates 9 connected one to the other by angle irons 10, which casing has the forward portion resting upon and securely fastened to the floor 7, and the rear portion thereof passing to the ground line indicated at 11 and inclosing the wall 1 and the bridge 3, it being noticed that the bridge and wall also formed from sheet metal plates 14 connected also one to the other by angle irons l5 and having the forward portion thereof resting on the floor 7 and the rear end thereof passing to the ground line and supplied withla door 16 which opens directly through the inner casing to the fire pit 17 immediately above the grate bars.

18 and 19 are two similar diverging flues restlng on the floor 7 and passing from the fire pit to the forward end of the oven where they communicate with upwardly directed flues later referred to.

21 is a central flue resting on the floor and passing frornthe fire pit forwardly to the innler casing where it terminates in a dead enc.

22 are cross plates located above the flues and carried by suitable longitudinally disposed angle irons 23 and 24 secured to the side of the inner casing S. Fhe plates carry plates 25 forming the bottom of a baking oven 26 inclosed at the top by further cross plates 27 carried by angle irons 28 having the ends thereof supported by longitudinally disposed angle irons 29 also secured to the sides of the inner casing.

30, 31 and 32 are I beams located on the plates 27 and passing the full length of the inner casing and secured permanently in position by angle iron supports 33 passing across the ends of said casing.

34 are further plates carried by the I beams 30, 31 and 32 and also by angle irons 35 secured to the sides of the inner casing. These plates support a tile floor forming the bottom of an oven 36 inclosed at the top by plate 37 carried by angle irons 38 support ed at their ends by longitudinally disposed angle irons 39 secured to the inner face of the inner casing.

I beams 40, etl and 42 bear on the plates 37 and are secured to the ends by suitable angle iron cross bars 43, fastened to the inner face of the inner casing.

It is here to be noticed (see Fig. 5) that the I beams 40 and 42 terminate at the rear end a short distance from the rear end of the inner casing, while the forward end of the I beam 41 terminates a short distance from the forward end of the inner caslng.

44 are plates carried by the I beams 40,

41 and 42 and by angle iron bars 45 secured to the sides of the inner casing.

The fines 18 and 19 communicate rearwardly with the fire box and forwardly with upwardly directed fines 46 and 47 located between the casings, which latter fines open to further horizontally disposed fines A and I openings reserved at G and H between the rear ends of the I beams 40 and 42 and the rear'end of the inner casing with the fines 48 and 49. i

Dead air spacesare formed between the I beams 40, 42 and the walls of the inner casing. q

'The fines E and F connect directly with the chimney L located at thefront of the oven, which chimney is provided with a damper 50. V

Suitable cleaning gates 51 are located at the ends of the various fines to allow them to be readily cleaned out when desired.

The hot air and gases pass from the first pot forwardly through the fines 18 and 19, upwardly through the fines 46 and 47 backwardly through the fines A and B, upwardly through the fines 48 and 49, and thence across and forwardly through the fines E and F directly to the chimney where they are freed. Accordingly the ovens 26 and 36 are heated evenly and efficiently.

In order to preVent undne radiation and consequent loss of useful heat units I have filled in the space between the two casings with mineral wool 52 or other such material which will efi'ectually prevent any loss of this kind. The top plates 44 are also covered with mineral wool.

The material to be'baked is placed in the ovens on the tiled fioors by opening the doors 53 and 54 located at the front of the outside casing.

What I claim as my invention is In an oven, outer and inner casings, ovens located one above the other within the inner casing, horizontally directed fiues located between the ovens, diverging fines beneath the bottom oven, a fire box communicating with the rear ends of the fines beneath the bottom oven, a central horizontal fine between said diverging fiues terminating in a dead end, vertically directed fines being, in

communication rearwardly and forwardly with the rear and forward ends of the fines between the ovens, the vertically directed fiues communicating with the rear ends of the fines between the ovens being also in communication with the rear end of the fines beneath the bottom oven, all of said vertically directed fines being between the casings, a chimney communicating with the forward ends of the fines above the top oven, a damper in the chimney, and a non-conducting material interposed between the casings.

Signed at Winnipeg this 4 day of December, 1912.

GEORGE WINTER JONES.

Gbplqg of this patent may be obtained fer five cents each, by addressing the "Commissioner of mam; Washington, D. C. 

